"Jiggit" core XY from scratch

It might help to see the entire gantry, including all drive and idler pulleys. Too hard to really make any suggestions without seeing the "big picture"

Keep on truckin! I'm a huge fan of CoreXY designs because of the ridiculous speeds you can achieve with so little moving mass (assuming Bowden). Some CoreXY machines can move pretty accurately up to a meter a second (Fusion3).

While waiting for some parts to come in so I can get exact measurements for the X and Y carriages, I designed a new extruder to use on this thing (assuming it works, mind you):

http://home.comcast.net/~tomhorsley/har … ruder.html

I also have all my openscad parts in a tarball now.

So the hazards of prototyping have been revealed:

The real wheels work great, but I failed to take into account the space required by the shims I also need, so there is a big gap now where the top and bottom halves were supposed to meet around the opening for attaching the X rail. Guess I'll be adjusting my openscad and reprinting a lot of stuff.

More on the v-slot rails and wheels: I'm very impressed with how solid it all is. No force I can apply by hand will make it move in any direction other than along the rail where it is supposed to move (not that I'm as strong as Hafþór Júlíus Björnsson, mind you, but it is definitely very solid). And that is with just 3 of the mini wheels. Obviously I won't know how well it works for real till I have the motors dragging it around, but it sure seems promising.

Everything I read about it says it makes sense and works fine, but it will be a while before I can actually try it - I don't want to start cutting v-slot till I'm positive I know what length I want everything to be :-).